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Morphology and luminescent properties of BaMgAl10O17:Eu2+ phosphor synthesized by a hydrothermal homogeneous precipitation method

Authors

  • Zhan Hui Zhang,

    Corresponding author
    1. School of Materials Science and Engineering, Wuhan Institute of Technology, Xiongchu Main Street 693, 430073 Wuhan, P. R. China
    2. Key Laboratory of Plasma Chemistry and Advanced Materials of Hubei Province, Wuhan Institute of Technology, Xiongchu Main Street 693, 430073 Wuhan, P. R. China
    • Phone: +86 27 87195661, Fax: +86 27 87195661
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  • Li Chen,

    1. School of Materials Science and Engineering, Wuhan Institute of Technology, Xiongchu Main Street 693, 430073 Wuhan, P. R. China
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  • Qian Hong Gan,

    1. School of Materials Science and Engineering, Wuhan Institute of Technology, Xiongchu Main Street 693, 430073 Wuhan, P. R. China
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  • Qiao Tian,

    1. School of Materials Science and Engineering, Wuhan Institute of Technology, Xiongchu Main Street 693, 430073 Wuhan, P. R. China
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  • Chang Lian Chen,

    1. School of Materials Science and Engineering, Wuhan Institute of Technology, Xiongchu Main Street 693, 430073 Wuhan, P. R. China
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  • Zhi Liang Huang

    1. School of Materials Science and Engineering, Wuhan Institute of Technology, Xiongchu Main Street 693, 430073 Wuhan, P. R. China
    2. Key Laboratory of Plasma Chemistry and Advanced Materials of Hubei Province, Wuhan Institute of Technology, Xiongchu Main Street 693, 430073 Wuhan, P. R. China
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Abstract

In this paper, we report a morphology controllable and energetically efficient route to prepare blue-emitting BaMgAl10O17:Eu2+ (BAM) phosphor, a hydrothermal homogeneous precipitation/calcinations method. Utilizing a urea homogeneous hydrolysis reaction within a sealed hydrothermal container with self-generated pressure, well-crystallized BAM with regular morphologies was obtained at a urea dosage of nurea:ncations = 7.5 and a calcining temperature of 1200 °C. The as-prepared phosphor was granular in shape and had an average particle size of about 0.1 µm without using any additional agents. With the template-directed function of polyethylene glycol or β-cyclodextrin, the as-prepared phosphors respectively, had rod-like and flake-like shapes. According to the photoluminescent results, rod-like or flake-like BAM showed similar luminescent characteristics with granular BAM except slightly stronger luminescent intensity. When the calcining temperature was raised to 1400 °C, the emission intensity of the sample prepared by hydrothermal homogeneous precipitation was stronger than that of commercial BAM.

original image

Emission spectra of the produced BAM powders fired at (a) 1200 °C and (b) 1400 °C. The measured emission spectrum of commercial BAM powder is also plotted as (c) (λex = 254 nm).

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